Of Blood and Ashes by Kyoko M

The world's deadliest dragon, the infamous Baba Yaga, is loose on the streets of Tokyo.

Dr. Rhett "Jack" Jackson and Dr. Kamala Anjali have been tasked with helping the government take down a dragon the size of a Tyrannosaurus Rex after it sends part of the city up in flames. Things worsen when they lose track of dragon in none other than Aokigahara, the Suicide Forest--a section of woods in Japan that is rumored to be one of the most haunted places on earth. They've also got the yakuza who cloned the dragon hellbent on getting her back, and they don't care who they kill in order to re-capture the dragon.

Jack and Kamala are joined by CIA field agent William Fry and dragon-hunting expert Juniper Snow as they infiltrate the forest to hunt the dragon before she can hurt anyone else. Between the ruthless yakuza hot on their trail and the growing mistrust in their small hunting party, it will take a miracle for Jack and Kamala to make it out alive...

Of Blood and Ashes is the second book in the series, following the Amazon bestselling Of Cinder and Bone.